Don't know how a discussion about HT ended up in a flame war, but whatever.
I tested HT on a hexacore CPU with the following games: CS:GO, PUBG, Hitman, Metro Last Redux and Final Fantasy XV Benchmark.
FPS was higher with HT off by 1-5 percent. On CPU benchmarks, serious performance drops, but hardly noticeable in real-world use. Encoding and compression takes ages with or without HT.
If you're a pro gamer, or spend most of the time gaming... turn HT off and push the clock by 100-200 MHz.
P.S.
I'm curious about Battlefield V, but EA shoved 30GB update on me.