I faced the same issue and found DisplayFusion to be a great utility for managing multiple displays. It lets you fully disable unused displays with a ...
some top options: Corsair Dominator Platinum RGB DDR5 (5600 MHz): Gen: DDR5 Capacity: 32 GB (2 x 16 GB) Frequency: 5600 MHz Latency: 13 n...
What is your budget ?