I think I read somewhere that unstaking SPT is similar to unstaking SPS in that it's a 4 week process which releases 25% each week until the process is complete. I could be wrong though.
I'm not sure when it comes to undelegating. I would think that happens a whole lot faster, if not immediately after submitting the request. My thoughts behind that are that staking locks up your tokens, but delegating is a permissions authorization so a revocation should take less time than unlocking. Hope that helps!
Thanks sure does! my experience is undelegating takes a few days (for the tokens I tried, made a mistake sometimes delegating) rather than weeks. But it might be different for different tokens not sure
Will give it a small try if I ever feel the need to do it