It could just be the volume that's keeping you sore.
The problem with hammies being sore or weak (relative to quads) or tight is that it could come down to a ton of things:
- structure (physiology, usually bone but even muscle length, etc.)
- form
- workload
- flexibility
DL & squat both hit a big chain of musculature, they pound on the CNS, they involve adaptation of breath, heart and blood flow; hormonal release, joints, nerves ... they're big, awesome exercises and it can be difficult what about them (or even something else) is causing an issue. You can eliminate some causes, try different routines, check with specialists, and have your form checked. There's an answer out there but I don't know what it is.
I hope you can get it figured out. Pain IS part of the process, but you don't want the kind of pain that will lead to injury, ofc.
Maybe foam rolling, massage, a different warm-up, a hot yoga class, something like that is what's needed.