Well, how then I can work on the same data in 2 different DE? Is there a way?
I just reinstalled and will see if KDE works smoothly after the updates because previously - you might see my post- it was unresponsive.
If not I will install LXQT under a DIFFERENT USER.
EDIT: This time I booted the flash disk with the opensource drivers! I hope it will make it better. Do you think it is better. What caused me to go LXQT was KDE was so unresponsive! Would opensource drivers make it better?
Well, megavolt gave a more useful answer a few seconds before I gave my less useful answer (now deleted)
On the other questions: Please read the entire N00b tutorial because no one can answer these questions but you as it depends on how you manage your system more than the actual hardware of your system (within reasonable limits: a 2GB RAM, 100HB 5000 RPM HDD system will be slower than a 1TB RAM and 1 Exabyte of RAID 0+1 NVMes, obviously…)
There is no proprietary driver for intel at all. Everything there is open source for linux.
I would rather think that the Intel GPU is too weak for KDEs fancy effects with opengl. Maybe you get a better performance when changing the effects to xrender (instead opengl) which would be then CPU only rendering.
I’ve marked this answer as the solution to your question as it is by far the best answer you’ll get.
However, if you disagree with my choice, please feel free to take any other answer as the solution to your question or even remove the solution altogether: You are in control! (If you disagree with my choice, just send me a personal message and explain why I shouldn’t have done this or or if you agree)
P.S. In the future, please don’t forget to come back to your question after your issue has been solved and click the 3 dots below the answer to mark a solution like this below the answer that helped you most:
so that the next person that has the exact same problem you just had will benefit from your post as well as your question will now be in the “solved” status.