When using the up/down and right/left buttons, it will skip over several programs in the guide before stopping. It also does this during a search and skips over several letters before stopping.
For the "remote skipping" problem, try restarting your Roku. (Note that if yours is a Roku TV with "Fast start" enabled, turning it off and back on just puts it into and out of a standby state and does NOT give you a complete restart.)
Depending on your Roku model and Roku version number you'll find the "System restart" option under "Settings > System > Power" or if you don't have a "Power" option, under "Settings > System".
If a restart doesn't do it, or if you don't have sufficient control with the remote to navigate the Roku menus, you can also restart by pulling the power plug to the Roku for a few seconds then plugging it back in and waiting for it to restart.
For the "remote skipping" problem, try restarting your Roku. (Note that if yours is a Roku TV with "Fast start" enabled, turning it off and back on just puts it into and out of a standby state and does NOT give you a complete restart.)
Depending on your Roku model and Roku version number you'll find the "System restart" option under "Settings > System > Power" or if you don't have a "Power" option, under "Settings > System".
If a restart doesn't do it, or if you don't have sufficient control with the remote to navigate the Roku menus, you can also restart by pulling the power plug to the Roku for a few seconds then plugging it back in and waiting for it to restart.