Flat pre with 99 and be at peace. Added bonus of that is that if you get squeezed, his range is much wider.

AK and QQ I'm calling 4b IP.

JJ always troublesome. Look at stats I guess, and shove/fold, with folding except if he's a maniac.

As always, just a relative begginer here, listen to the more experienced guys.

I would 4bet nothing with these odd stack sizes against this huge 4bet, just call TT+, AK, AQs (prob only JJ+, AK or QQ+ AK, depends on the player).
Postflop I would play very cautious and passive s.t. the villain makes no immediate profit with bluffs. This means, I would fold my weak overpairs to a 2nd barrel, only call AK twice on an A high board and I let villain valueown himself.

In general, if an all in shove would be 5x or more, there is no need to have a 5betting range in position (6 even oop).
Villain could only call Kk and AA to a shove and this strategy is still not exploitable.

Without reads, I'm jamming AK+/QQ here, calling whatever else I think is profitable which is probably JJ/TT, maybe some AQs too. I'd also say it's probably a spot where we may want to consider playing a mixed strat with AA, flatting 4b or 5bing.

110BB is not deep enough where we should be considering flatting whole range. The fact that the 4b is big is even more reason to 5b more, rather than the other way around.

I'm a 2NL - 10NL player working at the game full time so, of course, my situations and games are far, far more simple and straightforward than what you guys are getting into here. Still, studying higher stakes hands helps me understand higher level concepts and lines so I'm starting to spend more time studying both micros as well as mid + stakes content, too.

My question is this: Because the blinds are bigger at higher stakes cash games, and there's more dead money in the middle - along with the fact that the pots are going to grow much larger much faster - is this why people loosen up and play a wider range of hands more aggressively than they do at lower stakes?

Thanks. I'm just starting to play with $15-30 stacks in the past week and am of course having more fun than ever. Things are getting far more complex and I'm enjoying the game much more now that there's more money involved and I actually have a slight clue as to what I'm doing.