I have this issue as well. I have a two PC build, my old PC works just fine no issues with task manager, my brand new PC does have issues with Task Manager.
They are both on Windows 10, fully updated including bios and firmware updates. Both also share the same "case" as they are built inside of a desk: Lian Li DK-05
New PC with Task Manager issue - Specs:
Intel Core i9-11900K 3.5 GHz 8-Core Processor
NZXT Kraken X73 RGB 52.44 CFM Liquid CPU Cooler
Asus ROG MAXIMUS XIII HERO ATX LGA1200 Motherboard
G.Skill Trident Z Neo 128 GB (4 x 32 GB) DDR4-3600 CL18 Memory
Western Digital Black 6 TB 3.5" 7200RPM Internal Hard Drive
Samsung 980 Pro 2 TB M.2-2280 NVME Solid State Drive
Asus GeForce RTX 3090 24 GB STRIX GAMING OC Video Card
Asus ROG STRIX G 1000 W 80+ Gold Certified Fully Modular ATX Power Supply
Old PC with no Task Manager issues - Specs:
Intel Core i7-5930K 3.5 GHz 6-Core Processor
Corsair H110i 113 CFM Liquid CPU Cooler
MSI X99A SLI PLUS ATX LGA2011-3 Motherboard
G.Skill Ripjaws 4 series 64 GB (8 x 8 GB) DDR4-2133 CL15 Memory
Samsung 850 EVO-Series 1 TB 2.5" Solid State Drive
Western Digital Black 5 TB 3.5" 7200RPM Internal Hard Drive
Samsung 950 PRO 512 GB M.2-2280 NVME Solid State Drive
Corsair HXi 1000 W 80+ Platinum Certified Fully Modular ATX Power Supply
Thanks