We live just south of Orlando. I-4 is an absolute mess through the Orlando area. Numerous changes to exits and entrance ramps are made very often. As mentioned, lanes have been narrowed, some of the temporary paving is rough, and traffic is horrendous!
If you need to get past Orlando, or to Orlando area attractions, I strongly recommend using SR 417. It is a toll road, but well worth it to minimize the hassle if I-4. It may add a few miles to the trip, but you should be able to maintain a reasonable safe speed.
And....if you absolutely MUST use I-4, do NOT
depend on your GPS being accurate.
GPS should be fine on 417.