Unblocked static is such a pain, especially when it’s inconsistent like that. Have you tried grounding your equipment? Sometimes a simple ground loop isolator can fix the issue. I got one for like $20, and it worked wonders.
Also, if it’s worse at night, it might be your neighbors using more electricity. Try plugging your setup into a different circuit in your house.
Also, if it’s worse at night, it might be your neighbors using more electricity. Try plugging your setup into a different circuit in your house.