I frequently prefer forcing '2 channel stereo' setting rather than the default surround a lot of programming defaults to.
you can also try 'direct'.
Receiver Too Weak?
Below is my setup. It just sounds lackluster and I'm wondering if it's my receiver or something else. I put some links in there so it's easy to find specs.
Receiver: Yamaha RX-A770 (https://usa.yamaha.com/products/audio_visual/av_receivers_amps/rx-a770_u/specs.html#product-tabs)
Center: Bowers & Wilkins HTM62 (https://www.hifiengine.com/manual_library/bowers-and-wilkins/htm62.shtml)
Front: Bowers & Wilkins CM8 (https://hometheaterhifi.com/reviews/speaker/floor-standing/baw-cm8-bookshelf-speakers/)
Thanks!