I think the ordor/taste/faom issue is likely due to too much algecide. I notice the same things right after adding the algecides (standard and performance). Since the agecide is added on a weekly basis, the levels may be building up too high.

I noticed that when I kept my H2O2 levels high I could not maintain a good sanatizer level without great expense. I believe the H2O2 decomposes the sanatizer.