Query optimization suggestion for improving performance in Sanity.io.

*[_type=='event' && _id =='SOME_ID'] { 
      "participants": *[_id in ^.participants[]._ref] | order(firstName) {
        _id, 
        firstName,
        lastName,
        position,
        company->{
          _id,
          name,
          url,
          companyId,
          enonicId,
          "imageUrl": logo.asset->url,
          type,
          slotSets,
          contacts[]->{
             _id, 
            firstName,
            lastName,
            position,
            company,
            companyId,
            code,
            phone,
            email,
            "imageUrl": image.asset->url
          },
         "employees": *[_type=="participant" && company->_id == ^._id],
         uvps[]->{
            _id,
            title,
            synopsis,
            description,
            cluster,
            categories,
            references,
            trl,
            attachements[] {
                ...asset-> {
                    url,
                    "name": originalFilename
                }
            }
          },
        },
        bio,
        linkedin,
        code,
        phone,
        email,
        "imageUrl": image.asset->url,
        organizer->{
            _id,
            name,
            logo,
            url
        },
        "referedByCompany": *[_type=='company' && references(^._id)],
        role,
        notifications
      }
    }

"employees": *[_type=="participant" && company->_id == ^._id],