I have the following IIS rewrite rules that work exactly as I wish on both my development and live servers within an Orchard CMS website, though when enabled, seriously slow the site's page loads. This is easily tested by enabling/disabling the rules to notice the performance decrease, which appears to accrue (i.e. not one rule more than others).As these are the first rules I've ever created, I imagine there may be some obvious pitfalls, though my research hasn't lead me to discover any.So simply put, what might be causing the slowdown in my page load times (...perhaps order?):    <rewrite>      <rules>        <rule name=www to non-www enabled=true stopProcessing=true>          <match url=(.*) />          <conditions>            <add input={HTTP_HOST} pattern=^www.(.*)$ />          </conditions>          <action type=Redirect url=http://{C:1}/{R:0} redirectType=Permanent />        </rule>        <rule name=Dont Process Any Further enabled=true stopProcessing=true>          <match url=^(about-us$|contact$|copyright$|privacy$|terms$|book$|surroundings$|                 Admin|Media|Themes|Modules|Core|Users|Orchard|source                 ) />          <!-- Match url, Line (1): user specific. Line (2): app specific -->          <action type=None />        </rule>        <!--When root/url requested, goto _domain_index-->        <rule name=Rewrite - Root Hit Redirect enabled=true>          <match url=^$ />          <conditions logicalGrouping=MatchAll trackAllCaptures=false>            <add input={HTTP_HOST} pattern=^(www.)?brun.azurewebsites.net negate=true />            <add input={HTTP_HOST} pattern=^(www.)?brun.com negate=true />            <add input={HTTP_HOST} pattern=^(www.)?(.*).com />          </conditions>          <action type=Rewrite url=_{C:2}_index />        </rule>        <!--Note: the first pattern in this rule stops the *possible* above rules URL        being rewritten again i.e _domain_index to _domain__domain_index, whilst        also allowing 'View' links from Orchards Dashboard to work-->        <rule name=Rewrite - /page to /_domain_page enabled=true>          <match url=^(.*) />          <conditions logicalGrouping=MatchAll trackAllCaptures=true>            <!--<add input={REQUEST_URI} pattern=/_([a-zA-Z]+)_index$ negate=true />-->            <add input={REQUEST_URI} pattern=/_([a-zA-Z]+)_([a-zA-Z]+)$ negate=true />            <add input={REQUEST_FILENAME} matchType=IsFile negate=true />            <add input={REQUEST_FILENAME} matchType=IsDirectory negate=true />            <add input={HTTP_HOST} pattern=^(www.)?brun.azurewebsites.net negate=true />            <add input={HTTP_HOST} pattern=^(www.)?brun.com negate=true />            <add input={HTTP_HOST} pattern=^(www.)?(.*).com />          </conditions>          <action type=Rewrite url=_{C:5}_{R:1} />        </rule>      </rules>    </rewrite>
What might be causing my site's pages to load more slowly in these IIS Rewrite Module rules?
redirects;url rewriting;performance;optimization;iis8