you're skeptical but you had to have been there! cheap 90s hardware was jank, and characteristics you take for granted, because they are on standard issue hardware today, were only available on high end expensive machines.

in Eastern Europe we had computer clubs, which were like internet cafes, but without internet. you went there to play lan games, paid by the hour. they were usually packed, and people were usually decent. you had computer club rats, and I was one of them. I played q1, q2 and then cs for money. you show up to a club, strike a pose, "your club's cs fu are that of a dog, I challenge any one of you lamers to de_dust 1x1 deagle only", and then sometimes if you met your match you'd put cash up. even working, well maintained hardware ranged in quality to the point of making significant difference to a game. you always carried your own mouse at least (and sometimes a keyboard), and a config on a floppy disk. but the one thing you learned to spot were monitor makes and brands, for the reasons guy you responding to stated. in fact, occasionally computer club admins in collusion with their house teams will put you on a machine with poor monitor. if you had big team vs team match planned, you'd schedule an outing to a downtown club with known high refresh rate monitors and quality hardware (they were never "the club next door" and their hourly rate was usually higher) to both level the playing field and provide peak possible playing experience.