Do you have a swapfile? What’s your memory load like? Might just be paging, or your window manager… need more info :)
$ free -m
total used free shared buffers cached
Mem: 1995 1856 138 0 36 433
-/+ buffers/cache: 1386 608
Swap: 7997 57 7940
Hello @MRZA-MRZA, are you still experiencing this issue on an up to date system?
It's not actual anymore. Steam works properly on different systems.
Nothing extracted yet.
When I move Steam window (friends, chat, etc), I cannot interact with UI elements for some time.
Way to reproduce:
Open chat window while main Steam window is maximized in background. Drag it and move around for few second. Background Steam window will redraw slowly. When stop and try to type something. Nothing will display. Try open pop-up menus. It won't work. But UI elements react on mouse over. Then wait. Wait more and then everything you've typed displayed and menus opened and steam became operational again. Same with resizing window, but no matter what is in background.
If you try to move steam window f. e. without other steam window in background everything will work as expected with no problems.
System info below.