can confirm,really annoying bug

Same problem here,since first .63 version game is unplayable for me
.62 worked great

There is something seriously wrong.. I joined some server today and fps was fine around 50-70 in Svetlo,then after couple of minutes it went to shit again.

I just installed new drivers and I am not 100% sure but I think that might helped.No suttering so far,played for almost an hour.My drivers where couple months old so that could be it.Will provide more info later this week.Thank you :)

Issue is still present in my case,fix above doesn't help.
I run te game at 60~ fps but stuttering that occurs after 15minutes~ of playing especially in the city makes the game unplayable.
My pc is pretty old but I had no issue like this in .62
intel core i3 3220
gtx 660 2gb vram
8gb ram
Game is also installed on a ssd

It seems fixed now, I am respawning with backpack + bandage now