Maybe it is a graphic acceleration problem?
I would suggest to try the “beta driver” 460xx… they are available through aur packages…
I am running a gtx 1050ti and experienceed also problems with thr 455xx … on high workload it just freezes… workaround was changing to another TTY and switch back.
However… since i use 460xx this issue is away.
You will need these packages:
(also keep sure you removed the old drivers)
pamac build nvidia-settings-beta opencl-nvidia-beta nvidia-utils-beta nvidia-beta-dkms lib32-nvidia-utils-beta lib32-opencl-nvidia-beta
You will need also these configs: