P: Curves lag since version 21.1

There's a noticeable lag in curves since version 21.1.
I am now on 21.1.2 and it's still there.
Up until 21.0 they used to refresh smoothly. I am attaching a video to illustrate the problem.
I'm also attaching a couple of screenshots of my performance tab in "Preferences".
These are my PC specs:

Operating System
Windows 10 Home 64-bit
CPU
Intel Core i7 7700K @ 4.20GHz
Kaby Lake 14nm Technology
RAM
16.0GB Dual-Channel Unknown @ 1070MHz (15-15-15-36)
Motherboard
ASUSTeK COMPUTER INC. PRIME Z270-A (LGA1151)
Graphics
4095MB NVIDIA GeForce GTX 1050 Ti (Gigabyte)
NVIDIA Studio Driver 442.92 (latest one)

Thanks!