Pilot flying C-182 aircraft reported a NMAC with a pair of skydivers while in cruise flight.

Narrative

I was on an IFR flight plan from ZZZ to ZZZ1; routing via ZZZZZ. We were about 30NM West of ZZZ2 direct to ZZZZZ; when I heard another pilot announce to Center they would be dropping parachuters over ZZZ2 in 2 mins. ATC re-announced that on frequency. I did not hear ATC announce when the parachuters were actually dropped; nor did I hear the drop pilot announce that. We were about 30NM away from ZZZ2 at the time the 2 minute warning was given. I could see the drop plane on ADSB so I knew how far away they were and didn't expect a vector and ATC didn't give me one. I expected the parachuters to be long on the ground by the time I passed over ZZZ2 given when they were supposed to be dropped. About 15 mins later we were over the airport. At the time there were scattered clouds right at my altitude. When we came out of a cloud; my passenger yells and points to the left. There are two parachuters at our altitude (5000 ft.) with chutes deployed floating down; maybe 300 yards off my left wing. I turned to the right; immediately called ATC and told them I needed an immediate right deviation vector for parachuters off our left wing. They give me a 50 degree turn right-- which took me back into IMC. This was very uncomfortable because I could not see and avoid any other parachuters that may have been out there; but at least I knew it would keep me safely away from the ones I had already seen. 5 mins later ATC vectored us back on course and to ZZZ1 without any other conversation about what had happened. I have encountered parachute activity many times on that route. Always if I was within 10 miles or so of ZZZ2 when jumpers were being dropped; ATC would give me a vector around ZZZ2. If I was a lot farther; as I was today; they wouldn't because parachuters would be on the ground long before I flew over ZZZ2. Based on what I experienced today I believe there should be more of a safety buffer and ATC should issue vectors to IFR flights; especially in mixed IMC conditions; as much as 30-50 miles out from jump activity and there should be a requirement to announce when parachuters are actually dropped instead of just two minutes ahead of the drop. It was clear from this incident today that the jumpers were dropped way beyond the 2 minute warning. This created a serious safety issue for flights and jumpers; especially in mixed VMC/IMC conditions.