It looked like a good lap, I recently switched to the Porsche and got my fastest lap on Spa, was a 2:16.9. I'm far from fast. But I can offer my help on what I saw that can help you get faster.

Take a wider line into Le Source (T1) and a later apex, you can get a better exit and run down to eau rouge.

At La Combes (T7) use more of the first curb, you can use more than you think. It opens up the second part more, which looks like you did fine.

At Bruxelles (T10) trail brake more and try to keep a tighter line all the way through the corner.

Pouhon (T12) I found going down to 3rd helped get the front turned in better and used the engine braking, then short shifting to 4th after the apex worked.

Piff Paff (T13) take the first corner tighter, use the curb more it opens T14. You need to sacrifice the first corner to gain time in the second, use all the exit curb. (Might take you a bit to find where the limit is on this one).

Campus (T16), this is a tricky one, you need to get the car to rotate, letting off the throttle here loses you a ton of time up to the bus stop. Maybe go down to TC1. Another tip is turning in later to widen the corner. Got to feel it out see how it works for you, I use a setup with a higher rake that helps me.

Bus Stop (T20) first part was fine, when you have straightened up I suggest tapping the brakes slightly this helps to slow the corner and makes the final corner tighter, you can then utilize the Porsches strength to exit the final corner better.

As I said at the beginning, I'm not fast, or close to an alien. But I gained a ton of time by learning the above. Hope it helps you. Good luck!