tweetdeck.twitter.com[0] works really well for this. It does not "filter" your feed in any way (as far as I know). You follow a hashtag you see every tweet for that hashtag. You follow a user and you can filter out "retweets" and "likes" to only see what the user posts (I wanted to see what @POTUS tweets and it's nothing only retweets).

A column in tweetdeck can be a user, a search, a list, a hashtag, and more. Every column shows ever tweet and they mostly come in realtime.

[0] https://tweetdeck.twitter.com