I have been looking for a TV that can replace monitor too. This 8 series Samsung TV With 100 motion rate should not have any problems to play games.
I think this is 2020 model (RRP $999) and TGG has it for $895.
I found a detailed review of TU8000 series here, so you can decide.
Dolby Digital Plus
Motion rate 100
Auto Game Mode
Set Size with Stand (WxHxD) : 963.9 x 627.8 x 192.5 mm
Works with: Netflix, Amazon Prime, Disney+, Apple TV, Google Play, Kayo, Foxtel, Stan, ABC iView, SBS On Demand, 7Plus, 9Now, 10Play, Amazon Alexa, Google Assistant, AirPlay 2.
Don’t forget Cashback.