I’m not a HCP and have relatively little experience but looking at your audiogram, it seems for your hearing loss with lack of low-frequency response relative to normal hearing that you should be wearing tight-fitting molds if for no other reason than to trap bass frequencies in your ears. And obviously it’s important to have feedback control properly implemented for your HA’s and the fit of your chosen receiver domes or molds and amount of venting provided. So I would say (and take it with a grain of salt for lack of expertise on my part) that you should be wearing molds with a moderate to low degree of venting with feedback control properly implemented. I can switch to Speech Clarity and have ZERO problem with feedback. The HA OEM is a convenient target - I know I’ve blamed ReSound for various stuff - but sometimes our own HA use and preferences can make difficulties more likely. Especially if you got your HA’s at Costco or under a full-service package, I’d go back to your provider and have them adjust your fit appropriately or if your particular provider can’t do it properly, it might be time to change providers (if Costco, ask for another fitter or go to another Costco). But then again, what do I know?
P.S. The other thing that might be going on is that there is no feedback whatsoever. That you’re just hearing soft sounds, especially high-frequency sounds, that have been specially amplified. Normally when you have mild to moderate hearing loss, you can no longer hear soft sounds of a certain frequency but the HA’s compensate for that by amplifying what was a soft sound into moderate range loudness. So now everything when you were a normal hearing range person that used to range from soft through moderate to very loud is now COMPRESSED into the sound range of moderately loud to loud sound level. A first-time hearing aid user (don’t know if you fall into that category) will be hearing soft sounds now that they never heard in a long time and now they will seem moderately loud and perhaps overwhelming - especially with Speech Clarity, which kicks high-frequency (and midtones) up a notch or two. Normally the HA wearer acclimates to the new normal and accepts a certain degree of amplified loudness as the “new soft” and further degrees of amplified sound (if at all) as the new moderate and loud. Speech Clarity is a special “distorted” weirdness. It’s not designed for perfectly naturally sound. Most noise is weighted towards the low frequency end. Speech Clarity (if you look in Sound Enhancer) decreases amplification there but if you look at midtones and treble, those frequencies are amplified because we get a lot of syllabic cues in recognition there and one can amplify speech more relative to noise there. So Speech Clarity is designed to “go weird” in a difficult listening situation to better understand words, never mind faithful reproduction of real world sound. Don’t use it if you don’t have a problem with speech recognition, which is what most HA wears are principally wearing their HA’s for.
And just on hearing soft sounds for whatever reason, especially with my new left Quattro that has fantastic high frequency reproduction, I’m hearing all sort of soft noises that I wasn’t hearing very well with my older battle-scarred Quattro’s. I’ve thought the left Quattro is overdoing amplification. I ask my wife, "Do you hear that noise (paper rustling, clock ticking, turn signal clicking) thinking she’ll say, NO. She’ll typically say, YES and IT’s QUITE LOUD. So maybe, in spite of all the explanations given above, your house really is quite noisy and you’re just hearing all sorts of sounds that you’ve never heard before well or at all with hearing loss. I think others have remarked on expansion as a possibility to better control, too. But that’s what HCP’s are for: to figure what’s going on between you, your HA’s, and your environment, and make the best adjustments possible.