Ever since the performance update I've had some issues.
My frame rate has improved averaging about 55 but after 2 or 3 games it always now drops to 15 - 20 and is unplayable.

I'm on a laptop:

Processor Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz, 2592 Mhz, 2 Core(s), 4 Logical Processor(s)
Installed Physical Memory (RAM) 8.00 GB
Name NVIDIA GeForce 940MX

I have checked if it is GPU temperature related and it isn't, never rises above 60C.

It's fine after a reboot so I now have to restart computer after every game or two.

Anyone else had issues? I never had any slowdown before the recent performance patch.