As many others have said, this started off quickly and simply with a scattering of write ins across the grid. Within an 45 mins I’d begun to slow (right) down and finally ground to halt.
About to move on to the weekend i cryptic and would love some help with my remaining: 8, 13, 16a as well as 4 & 11d
FOI 9a and (so far) COD is the 2/19d combination which induced much groaning when the penny dropped.