Dropouts and Packet losses

I get intermittent Zoom dropouts. My modem is a customer-owned Netgear CM1150V.  Looking at the logs I was getting errors on both downstream OFDM channels (193, 194).  I removed a 2-way splitter (left over from when I had a cable box) and connected the modem directly with a barrel connector, then rebooted. Signal levels improved by about 3 dB, but downstream OFDM Channel ID 194 at 957 MHz is still accumulating uncorrectable codewords quickly.

Post-reboot OFDM readings:
Channel ID 193, 690 MHz: power 0.3 dBmV, MER 39.6 dB, uncorrectables 0.
Channel ID 194, 957 MHz: power -2.5 dBmV, MER 36.6 dB, uncorrectables rose from 36 to about 8500 shortly after reboot.

Before removing the splitter, channel 194 had about 196,201,455 uncorrectables and repeated CM-STATUS events for channel 194, event types 16 and 24.

Please check for downstream OFDM impairment/noise around 957 MHz and the drop/tap levels. The modem is now directly connected, so the old splitter is no longer in the path.  The connection on the side of the house is solid.