Turning OFF Hyper Threading on an old CPU - How bad can it be?

The i3 4130 from Intel is an old dual core processor, though thanks to Hyperthreading (4 threads) it can still perform somewhat respectably in older games. But what happens when you turn it off? Other Specs: RTX 2070 8GB DDR3 Games Tested: Grand Theft Auto V CS:GO Red Dead Redemption 2 Fortnite Thanks for watching :)