Tearing on Manjaro KDE

I have Gnome and KDE installed in separate partitions and I go between them. I notice that in Gnome I have no tearing issues, say when scrolling on a browser or watching a YouTube video, but I do have those issues in KDE.

Below is my inxi output:

System:    Kernel: 5.11.14-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 Desktop: KDE Plasma 5.21.4 tk: Qt 5.15.2 
           wm: kwin_x11 vt: 1 dm: SDDM Distro: Manjaro Linux base: Arch Linux 
Machine:   Type: Laptop System: Apple product: MacBookPro10,1 v: 1.0 serial: <filter> Chassis: type: 10 
           v: Mac-C3EC7CD22292981F serial: <filter> 
           Mobo: Apple model: Mac-C3EC7CD22292981F v: MacBookPro10,1 serial: <filter> UEFI: Apple v: 421.0.0.0.0 
           date: 12/17/2020 
Battery:   ID-1: BAT0 charge: 93.7 Wh (100.0%) condition: 93.7/91.6 Wh (102.3%) volts: 12.7 min: 10.9 model: Newer Tech A1417 
           type: Li-ion serial: N/A status: Full cycles: 70 
           Device-1: hidpp_battery_0 model: Logitech Wireless Mouse MX Master 3 serial: <filter> 
           charge: 55% (should be ignored) rechargeable: yes status: Discharging 
           Device-2: hidpp_battery_1 model: Logitech K780 Multi-Device Wireless Keyboard serial: <filter> 
           charge: 100% (should be ignored) rechargeable: yes status: Discharging 
Memory:    RAM: total: 15.54 GiB used: 3.43 GiB (22.1%) 
           RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:       Info: Quad Core model: Intel Core i7-3740QM bits: 64 type: MT MCP arch: Ivy Bridge rev: 9 cache: L2: 6 MiB 
           bogomips: 43114 
           Speed: 1198 MHz min/max: 1200/3700 MHz Core speeds (MHz): 1: 1198 2: 1198 3: 1366 4: 1244 5: 1441 6: 1200 7: 1198 
           8: 1205 
           Flags: acpi aes aperfmperf apic arat arch_perfmon avx bts clflush cmov constant_tsc cpuid cpuid_fault cx16 cx8 de 
           ds_cpl dtes64 dtherm dts ept erms est f16c flexpriority flush_l1d fpu fsgsbase fxsr ht ibpb ibrs ida lahf_lm lm mca 
           mce md_clear mmx monitor msr mtrr nonstop_tsc nopl nx pae pat pbe pcid pclmulqdq pdcm pebs pge pln pni popcnt pse 
           pse36 pti pts rdrand rdtscp rep_good sep smep smx ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2 
           tpr_shadow tsc tsc_deadline_timer vme vmx vnmi vpid x2apic xsave xsaveopt xtopology xtpr 
Graphics:  Device-1: Intel 3rd Gen Core processor Graphics vendor: Apple driver: i915 v: kernel bus-ID: 00:02.0 
           chip-ID: 8086:0166 class-ID: 0300 
           Device-2: NVIDIA GK107M [GeForce GT 650M Mac Edition] vendor: Apple driver: nouveau v: kernel bus-ID: 01:00.0 
           chip-ID: 10de:0fd5 class-ID: 0300 
           Device-3: Apple FaceTime HD Camera (Built-in) type: USB driver: uvcvideo bus-ID: 1-1.1:3 chip-ID: 05ac:8510 
           class-ID: 0e02 serial: <filter> 
           Device-4: Apple FaceTime HD Camera (Display) type: USB driver: uvcvideo bus-ID: 3-1.5:4 chip-ID: 05ac:1112 
           class-ID: 0e02 serial: <filter> 
           Device-5: Apple FaceTime HD Camera (Display) type: USB driver: uvcvideo bus-ID: 4-1.5:4 chip-ID: 05ac:1112 
           class-ID: 0e02 serial: <filter> 
           Display: x11 server: X.Org 1.20.11 compositor: kwin_x11 driver: loaded: intel,nouveau unloaded: modesetting 
           alternate: fbdev,nv,vesa resolution: 1: 2560x1440~60Hz 2: 2560x1440~60Hz s-dpi: 96 
           OpenGL: renderer: NVE7 v: 4.3 Mesa 21.0.2 direct render: Yes 
Audio:     Device-1: Intel 7 Series/C216 Family High Definition Audio driver: snd_hda_intel v: kernel bus-ID: 00:1b.0 
           chip-ID: 8086:1e20 class-ID: 0403 
           Device-2: NVIDIA GK107 HDMI Audio vendor: Apple driver: snd_hda_intel v: kernel bus-ID: 01:00.1 chip-ID: 10de:0e1b 
           class-ID: 0403 
           Device-3: Apple Thunderbolt Display Audio type: USB driver: hid-generic,snd-usb-audio,usbhid bus-ID: 3-1.4:3 
           chip-ID: 05ac:1107 class-ID: 0300 serial: <filter> 
           Device-4: Apple Thunderbolt Display Audio type: USB driver: hid-generic,snd-usb-audio,usbhid bus-ID: 4-1.4:3 
           chip-ID: 05ac:1107 class-ID: 0300 serial: <filter> 
           Device-5: Logitech H600 [Wireless Headset] type: USB driver: hid-generic,snd-usb-audio,usbhid bus-ID: 9-2.3:4 
           chip-ID: 046d:0a29 class-ID: 0300 serial: <filter> 
           Sound Server-1: ALSA v: k5.11.14-1-MANJARO running: yes 
           Sound Server-2: JACK v: 0.125.0 running: no 
           Sound Server-3: PulseAudio v: 14.2 running: yes 
           Sound Server-4: PipeWire v: 0.3.25 running: yes 
Network:   Device-1: Broadcom NetXtreme BCM57786 Gigabit Ethernet PCIe driver: N/A port: 2000 bus-ID: 03:00.0 
           chip-ID: 14e4:16a3 class-ID: 0200 
           Device-2: Broadcom BCM4331 802.11a/b/g/n vendor: Apple AirPort Extreme driver: wl v: kernel port: 2000 
           bus-ID: 04:00.0 chip-ID: 14e4:4331 class-ID: 0280 
           IF: wlp4s0 state: up mac: <filter> 
           IP v4: <filter> type: dynamic noprefixroute scope: global broadcast: <filter> 
           IP v6: <filter> type: noprefixroute scope: link 
           Device-3: Broadcom NetXtreme BCM57761 Gigabit Ethernet PCIe vendor: Apple driver: tg3 v: kernel port: 2000 
           bus-ID: 0d:00.0 chip-ID: 14e4:16b0 class-ID: 0200 
           IF: enp13s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
           IP v4: <filter> type: dynamic noprefixroute scope: global broadcast: <filter> 
           IP v6: <filter> type: noprefixroute scope: link 
           Device-4: Broadcom NetXtreme BCM57761 Gigabit Ethernet PCIe vendor: Apple driver: tg3 v: kernel port: 2000 
           bus-ID: 3e:00.0 chip-ID: 14e4:16b0 class-ID: 0200 
           IF: enp62s0 state: down mac: <filter> 
           WAN IP: <filter> 
Bluetooth: Device-1: Apple Bluetooth Host Controller type: USB driver: btusb v: 0.8 bus-ID: 2-1.8.1.3:8 chip-ID: 05ac:8286 
           class-ID: fe01 
           Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends 
Logical:   Message: No logical block device data found. 
RAID:      Message: No RAID data found. 
Drives:    Local Storage: total: 8.19 TiB used: 157.02 GiB (1.9%) 
           ID-1: /dev/sda model: Aura Pro S MB258 size: 931.51 GiB speed: 6.0 Gb/s rotation: SSD serial: <filter> rev: 6ANR 
           scheme: GPT 
           ID-2: /dev/sdb type: USB vendor: Seagate model: Backup+ Hub BK size: 7.28 TiB serial: <filter> rev: D781 
           scheme: GPT 
           Message: No optical or floppy data found. 
Partition: ID-1: / size: 516.24 GiB used: 45.15 GiB (8.7%) fs: ext4 dev: /dev/sda2 label: N/A 
           uuid: 2888ee6c-3156-40cc-ab58-b2efb0745350 
           ID-2: /boot/efi size: 196.9 MiB used: 8.4 MiB (4.3%) fs: vfat dev: /dev/sdb1 label: EFI uuid: 67E3-17ED 
           ID-3: /run/media/bryank/Data size: 198.57 GiB used: 24.51 GiB (12.3%) fs: ext4 dev: /dev/sda3 label: Data 
           uuid: 118bfd46-6603-48f5-b56c-2fd577082f14 
           ID-4: /run/media/bryank/d3966ef6-6889-488d-bfa5-6b8e7682df93 size: 182.13 GiB used: 47.64 GiB (26.2%) fs: ext4 
           dev: /dev/sda4 label: N/A uuid: d3966ef6-6889-488d-bfa5-6b8e7682df93 
           ID-5: /run/timeshift/backup size: 918 GiB used: 39.72 GiB (4.3%) fs: ext4 dev: /dev/sdb3 label: Manjaro External 
           uuid: c9710831-4d6c-4c5f-b85c-fa6e616c18cb 
Swap:      ID-1: swap-1 type: partition size: 16.77 GiB used: 0 KiB (0.0%) priority: -2 dev: /dev/sda5 label: N/A 
           uuid: 2feb6cc8-3860-4730-8947-66bdfab3c1f6 
Unmounted: ID-1: /dev/sda1 size: 200 MiB fs: vfat label: EFI uuid: 67E3-17ED 
           ID-2: /dev/sdb2 size: 6.37 TiB fs: hfsplus label: Seagate 8TB uuid: 900e39fb-e11f-391c-b3eb-e23951153d08 
USB:       Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
           Hub-2: 1-1:2 info: Intel Integrated Rate Matching Hub ports: 6 rev: 2.0 speed: 480 Mb/s chip-ID: 8087:0024 
           class-ID: 0900 
           Device-1: 1-1.1:3 info: Apple FaceTime HD Camera (Built-in) type: Video driver: uvcvideo interfaces: 3 rev: 2.0 
           speed: 480 Mb/s power: 500mA chip-ID: 05ac:8510 class-ID: 0e02 serial: <filter> 
           Hub-3: 2-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
           Hub-4: 2-1:2 info: Intel Integrated Rate Matching Hub ports: 8 rev: 2.0 speed: 480 Mb/s chip-ID: 8087:0024 
           class-ID: 0900 
           Hub-5: 2-1.8:3 info: Microchip (formerly SMSC) USB 2.0 Hub ports: 2 rev: 2.0 speed: 480 Mb/s power: 2mA 
           chip-ID: 0424:2512 class-ID: 0900 
           Hub-6: 2-1.8.1:4 info: Broadcom BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth) ports: 3 rev: 2.0 speed: 12 Mb/s 
           power: 94mA chip-ID: 0a5c:4500 class-ID: 0900 
           Device-1: 2-1.8.1.3:8 info: Apple Bluetooth Host Controller type: Bluetooth driver: btusb interfaces: 4 rev: 2.0 
           speed: 12 Mb/s chip-ID: 05ac:8286 class-ID: fe01 
           Device-2: 2-1.8.2:5 info: Apple Apple Internal Keyboard / Trackpad type: Keyboard,HID,Mouse 
           driver: apple,bcm5974,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s power: 40mA chip-ID: 05ac:0262 class-ID: 0301 
           Hub-7: 3-0:1 info: Full speed (or root) Hub ports: 4 rev: 2.0 speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
           Hub-8: 3-1:2 info: Apple Hub in Thunderbolt Display ports: 7 rev: 2.0 speed: 480 Mb/s power: 100mA 
           chip-ID: 05ac:9127 class-ID: 0900 
           Device-1: 3-1.4:3 info: Apple Thunderbolt Display Audio type: Audio,HID driver: hid-generic,snd-usb-audio,usbhid 
           interfaces: 4 rev: 2.0 speed: 12 Mb/s power: 2mA chip-ID: 05ac:1107 class-ID: 0300 serial: <filter> 
           Device-2: 3-1.5:4 info: Apple FaceTime HD Camera (Display) type: Video driver: uvcvideo interfaces: 3 rev: 2.0 
           speed: 480 Mb/s power: 500mA chip-ID: 05ac:1112 class-ID: 0e02 serial: <filter> 
           Device-3: 3-1.7:5 info: Apple Thunderbolt Display type: HID driver: hid-generic,usbhid interfaces: 1 rev: 1.1 
           speed: 12 Mb/s power: 2mA chip-ID: 05ac:9227 class-ID: 0300 serial: <filter> 
           Hub-9: 4-0:1 info: Full speed (or root) Hub ports: 4 rev: 2.0 speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
           Hub-10: 4-1:2 info: Apple Hub in Thunderbolt Display ports: 7 rev: 2.0 speed: 480 Mb/s power: 100mA 
           chip-ID: 05ac:9127 class-ID: 0900 
           Device-1: 4-1.4:3 info: Apple Thunderbolt Display Audio type: Audio,HID driver: hid-generic,snd-usb-audio,usbhid 
           interfaces: 4 rev: 2.0 speed: 12 Mb/s power: 2mA chip-ID: 05ac:1107 class-ID: 0300 serial: <filter> 
           Device-2: 4-1.5:4 info: Apple FaceTime HD Camera (Display) type: Video driver: uvcvideo interfaces: 3 rev: 2.0 
           speed: 480 Mb/s power: 500mA chip-ID: 05ac:1112 class-ID: 0e02 serial: <filter> 
           Device-3: 4-1.7:5 info: Apple Thunderbolt Display type: HID driver: hid-generic,usbhid interfaces: 1 rev: 1.1 
           speed: 12 Mb/s power: 2mA chip-ID: 05ac:9227 class-ID: 0300 serial: <filter> 
           Hub-11: 5-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 speed: 12 Mb/s chip-ID: 1d6b:0001 class-ID: 0900 
           Hub-12: 6-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 speed: 12 Mb/s chip-ID: 1d6b:0001 class-ID: 0900 
           Hub-13: 7-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 speed: 12 Mb/s chip-ID: 1d6b:0001 class-ID: 0900 
           Hub-14: 8-0:1 info: Full speed (or root) Hub ports: 2 rev: 1.1 speed: 12 Mb/s chip-ID: 1d6b:0001 class-ID: 0900 
           Hub-15: 9-0:1 info: Full speed (or root) Hub ports: 4 rev: 2.0 speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
           Device-1: 9-1:2 info: Logitech Unifying Receiver type: Keyboard,Mouse,HID driver: logitech-djreceiver,usbhid 
           interfaces: 3 rev: 2.0 speed: 12 Mb/s power: 98mA chip-ID: 046d:c52b class-ID: 0300 
           Hub-16: 9-2:3 info: Seagate RSS LLC Backup Plus Hub ports: 3 rev: 2.1 speed: 480 Mb/s power: 100mA 
           chip-ID: 0bc2:ab44 class-ID: 0900 
           Device-1: 9-2.3:4 info: Logitech H600 [Wireless Headset] type: Audio,HID driver: hid-generic,snd-usb-audio,usbhid 
           interfaces: 4 rev: 2.0 speed: 12 Mb/s power: 144mA chip-ID: 046d:0a29 class-ID: 0300 serial: <filter> 
           Hub-17: 10-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.0 speed: 5 Gb/s chip-ID: 1d6b:0003 class-ID: 0900 
           Hub-18: 10-2:2 info: Seagate RSS LLC Backup+ Hub ports: 3 rev: 3.0 speed: 5 Gb/s chip-ID: 0bc2:ab45 class-ID: 0900 
           Device-1: 10-2.1:3 info: Seagate RSS LLC Backup Plus Hub (Mass Storage) type: Mass Storage driver: uas 
           interfaces: 1 rev: 3.1 speed: 5 Gb/s chip-ID: 0bc2:ab38 class-ID: 0806 serial: <filter> 
Sensors:   System Temperatures: cpu: 71.0 C mobo: 54.0 C gpu: nouveau temp: 60.0 C 
           Fan Speeds (RPM): N/A 
Info:      Processes: 302 Uptime: 3h 29m wakeups: 40 Init: systemd v: 247 Compilers: gcc: 10.2.0 Packages: 1380 pacman: 1369 
           flatpak: 5 snap: 6 Shell: Bash v: 5.1.0 running-in: konsole inxi: 3.3.04`
```

Any ideas?

https://wiki.archlinux.org/title/intel_graphics#Tearing

Don’t know your proper xorg configuration file location on Manjaro. It might be the same.