What type of 5x5 program are running? (DFHT 5x5, etc...)

Do you have a deloading phase built into your 5x5 program? If not I would highly recommend it as this gives your body a chance to recover from the constant pounding and also helps to prevent platueas.

Just keep in mind 5-10 lbs is still progression forward, it may not be the numbers you want but if your not plateauing then the program is still working. Another recommendation would be to switch to 3x3 for a couple weeks and then return to the 5x5, this allows you to move more weight in the meantime and should make your 5x5 lifts stronger when you return.